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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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79f8511c83
Add SWIOTLB config option and related files to Netlogic platform. Some XLP SoC components like the SD/MMC interface cannot do DMA beyond 32-bit physical address. The SD/MMC driver can use memory outside this range for IO, to support this we have to add bounce buffers implemented by SWIOTLB. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Cc: linux-mips@linux-mips.org Cc: Ganesan Ramalingam <ganesanr@broadcom.com> Patchwork: https://patchwork.linux-mips.org/patch/5410/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
/*
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* Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
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* reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the NetLogic
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* license below:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _NETLOGIC_COMMON_H_
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#define _NETLOGIC_COMMON_H_
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/*
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* Common SMP definitions
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*/
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#define RESET_VEC_PHYS 0x1fc00000
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#define RESET_DATA_PHYS (RESET_VEC_PHYS + (1<<10))
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#define BOOT_THREAD_MODE 0
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#define BOOT_NMI_LOCK 4
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#define BOOT_NMI_HANDLER 8
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#ifndef __ASSEMBLY__
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#include <linux/cpumask.h>
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#include <linux/spinlock.h>
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#include <asm/irq.h>
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#include <asm/mach-netlogic/multi-node.h>
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struct irq_desc;
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void nlm_smp_function_ipi_handler(unsigned int irq, struct irq_desc *desc);
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void nlm_smp_resched_ipi_handler(unsigned int irq, struct irq_desc *desc);
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void nlm_smp_irq_init(int hwcpuid);
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void nlm_boot_secondary_cpus(void);
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int nlm_wakeup_secondary_cpus(void);
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void nlm_rmiboot_preboot(void);
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void nlm_percpu_init(int hwcpuid);
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static inline void
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nlm_set_nmi_handler(void *handler)
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{
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char *reset_data;
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reset_data = (char *)CKSEG1ADDR(RESET_DATA_PHYS);
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*(int64_t *)(reset_data + BOOT_NMI_HANDLER) = (long)handler;
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}
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/*
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* Misc.
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*/
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unsigned int nlm_get_cpu_frequency(void);
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void nlm_node_init(int node);
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extern struct plat_smp_ops nlm_smp_ops;
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extern char nlm_reset_entry[], nlm_reset_entry_end[];
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/* SWIOTLB */
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extern struct dma_map_ops nlm_swiotlb_dma_ops;
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extern unsigned int nlm_threads_per_core;
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extern cpumask_t nlm_cpumask;
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struct nlm_soc_info {
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unsigned long coremask; /* cores enabled on the soc */
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unsigned long ebase;
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uint64_t irqmask;
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uint64_t sysbase; /* only for XLP */
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uint64_t picbase;
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spinlock_t piclock;
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};
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#define nlm_get_node(i) (&nlm_nodes[i])
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#ifdef CONFIG_CPU_XLR
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#define nlm_current_node() (&nlm_nodes[0])
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#else
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#define nlm_current_node() (&nlm_nodes[nlm_nodeid()])
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#endif
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struct irq_data;
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uint64_t nlm_pci_irqmask(int node);
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void nlm_set_pic_extra_ack(int node, int irq, void (*xack)(struct irq_data *));
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/*
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* The NR_IRQs is divided between nodes, each of them has a separate irq space
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*/
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static inline int nlm_irq_to_xirq(int node, int irq)
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{
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return node * NR_IRQS / NLM_NR_NODES + irq;
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}
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extern struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
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extern int nlm_cpu_ready[];
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#endif
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#endif /* _NETLOGIC_COMMON_H_ */
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